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Common and Alternate Current Sense Shunts

 

Current Sense Shunts are an important component in many voltage control programs. The use of current sense shunts allows the accurate measurement of input signal changes so that voltage control programs can maximize the performance of the circuit. Current sense shunts are available in a variety of configurations to suit applications.

 

Some applications where current DC Ammeter Shunt are applicable include high frequency systems and fan controlled inductions. In both of these systems, the purpose of the circuit is to provide accurate indication of induction delays in response to belt motions. In high frequency systems, the time delay in switching between impulses can cause a power surges, short circuits or temporary failures. In fan controlled inductions, the presence of dirt or other barriers in the inductor path can prevent smooth transition of alternating current. To overcome these obstacles, the application of current sensing shunt resistors allows the accurate monitoring of the circuit condition.

 

As shown in the illustration, the two different types of current sense shunts are either axial or bi-directional. Each type of current sense shunting has its own advantages and disadvantages. Bi-directional current sense shunts are commonly used in applications requiring high current capacity such as AC drives and synchronous load controls.

 

The two types of current sense shunts are generally selected based on the current requirement of the circuit. A DC amp pulse width current sense transistor is selected for a circuit that requires a long pulse. The tolerance of such a circuit to sudden surge or constant current draw is enhanced by the presence of additional insulation around the device. These additional capacitors help to buffer the sudden pulse and minimize the voltage drop during the steady state periods. Discover more facts about electronics at https://en.wikipedia.org/wiki/Electronics#Electronics_lab

 

DC Ammeter Shunt can also be selected based on the characteristic of the input devices. An example is a circuit that requires high current capacity but has low output power requirements. This circuit would need two types of semiconductor devices to accomplish this circuit. One type of semiconductor device could have a lower power requirement than the other so that the lower power semiconductor device is used as the input shunting device and the higher power semiconductor device as the output shunting device.

 

This tutorial covers shunt operation at both common and alternate currents. It is important to note that even though the two examples illustrated in this tutorial covers common current sense shunts, they are not meant to be implemented in all kinds of electrical circuits. Each of these examples should be used with careful consideration given to the location, current requirements, and typical use cases of each type of device for which the device will be used. The examples in this tutorial are intended for general educational purposes only and should not be used as a substitute for consulting an electrician or a qualified electrical contractor when the need for one is warranted.